<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .one {
            height: 200px;
            text-decoration: none;
        }
    </style>

</head>

<body>
    <!-- 输入div*10按tab -->
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <!-- 输入ul>li按tab -->
    <ul>
        <li></li>
    </ul>
    <div><span></span></div>
    <!-- 输入div+p按tab -->
    <div></div>
    <p></p>
    <!-- 输入.nav后按tab -->
    <div class="nav"></div>
    <!-- 输入#banner后按tab -->
    <div id="banner"></div>
    <!-- 输入p.one按tab -->
    <p class="one"></p>
    <!-- 输入p#second -->
    <p id="second"></p>
    <!-- 输入ul>li#two -->
    <ul>
        <li id="two"></li>
    </ul>
    <div class="demo"></div>
    <!-- 输入.demo$*5 -->
    <div class="demo1"></div>
    <div class="demo2"></div>
    <div class="demo3"></div>
    <div class="demo4"></div>
    <div class="demo5"></div>
    <!-- 标签里默认生成文字 
输入div{}在大括号中加文字后按tab-->
    <div>hhh</div>
    <!-- div{hhh}*5 -->
    <div>hh</div>
    <div>hh</div>
    <div>hh</div>
    <div>hh</div>
    <div>hh</div>
    <div>&</div>
    <div>&</div>
    <div>&</div>
    <div>&</div>
    <div>&</div>
</body>

</html>